Dr. Diana M. Bell, MD
- Medicare services, 2024
- 575
- Medicare patients, 2024
- 229
- MIPS score, 2024
- 93
- Hospital affiliations
- 2
- Industry payments
- $36
- Practice address
- 1500 E Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (626) 256-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Bell's professional email, personal email and mobile number
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Dr. Diana M. Bell is a pathologist in Duarte, California
Dr. Bell practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Bell's NPI, 1710131164, was assigned on November 12, 2008. Dr. Bell holds Pennsylvania license MD483886.
- NPI
- 1710131164NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325103120
- NPI enumeration date
- November 12, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 256-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diana M. Bell practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Bell's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 E Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (626) 256-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 E Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(626) 256-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Diana M. Bell is affiliated with 4 sites of care and 2 medical groups
Dr. Bell's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Bell is also affiliated with UPMC Presbyterian. The medical group on file is City of Hope. Dmand AI also links Dr. Bell to 1 more hospital, 1 other site and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diana M. Bell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bell practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diana M. Bell is one of 297 pathologists in California
Anatomic pathology is Dr. Bell's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. Dmand AI has Dr. Bell's licenses on file in 4 states: Pennsylvania, California, Mississippi and Texas.
Specialties and state licenses
- Anatomic pathology, PennsylvaniaPrimary
- California license
- Mississippi license
- Texas license
Pathologists near Dr. Bell
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Diana M. Bell billed Medicare for 575 services in 2024
CMS data shows 575 Medicare services from Dr. Bell across 11 procedure codes in 2024, for 229 Medicare patients. Medicare paid $22,074 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Bell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,9372024: 47176%
- Other services
- 2023: 1842024: 10443%
Dr. Bell compared with the California median for pathologists, 2024
- Dr. Bell
- California median
- Medicare services
- 575vs 67815% below
- Medicare patients
- 229vs 241Close to median
Medians across 211 pathologists in California with Dmand AI profiles that report each measure.
Dr. Bell's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bell and other pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Diana M. Bell treated 229 Medicare patients in 2024, average age 73
CMS counts 229 Medicare patients who saw Dr. Bell in 2024. The largest group is 65 to 74, with 112 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Bell's median patient age at 60, with 47% women.
Dr. Bell's Medicare patients by age, 2024
Dr. Bell's Medicare patients by sex, 2024
- Women10445%
- Men12555%
Chronic conditions among Dr. Bell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Cancer36%
- Anxiety31%
- Diabetes31%
- Ischemic heart disease31%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Diana M. Bell scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Bell for performance year 2024, reported as part of a group. Dr. Bell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Bell's MIPS scores, performance year 2024
- 93of 100Final score
- 78.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Diana M. Bell received $36 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Bell from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Aadi Bioscience, Inc. paid the most, $36.
Companies that paid Dr. Bell the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Diana M. Bell's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Diana M. Bell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Diana M. Bell's NPI number?
Dr. Diana M. Bell's NPI number is 1710131164. It was assigned on November 12, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Diana M. Bell?
Dr. Diana M. Bell is a pathologist in Duarte, California. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does Dr. Diana M. Bell practice?
Dr. Bell practices at 1500 E Duarte Rd, Duarte, CA 91010. Dr. Bell's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Bell to 1 hospital, 1 other site and 1 medical group.
What is Dr. Diana M. Bell's office phone number?
The practice phone on file for Dr. Bell is (626) 256-4673.
What is Dr. Diana M. Bell's medical license number?
Dr. Bell holds Pennsylvania license MD483886, one of the licenses on file in 4 states.
Which states has Dr. Diana M. Bell been licensed in?
Dmand AI has state licenses on file for Dr. Bell in Pennsylvania, California, Mississippi and Texas.
Which hospitals is Dr. Diana M. Bell affiliated with?
Dr. Bell is affiliated with UPMC Presbyterian. Dmand AI links Dr. Bell to 1 more hospital.
What medical group is Dr. Diana M. Bell part of?
Dr. Bell is linked to City of Hope. Dmand AI links Dr. Bell to 1 more medical group.
Does Dr. Diana M. Bell accept Medicare?
Yes. CMS data shows Dr. Bell billed Medicare for 575 services in 2024, and Dr. Bell accepts Medicare assignment.
What is Dr. Diana M. Bell's MIPS score?
Dr. Bell's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Diana M. Bell see?
CMS counts 229 Medicare patients who saw Dr. Bell in 2024, with an average age of 73.
What services does Dr. Diana M. Bell bill to Medicare?
In 2024, Dr. Bell's most billed Medicare services were lab and pathology test (88305), medicare service (G0452) and lab and pathology test (88341).
Has Dr. Diana M. Bell received payments from drug or device companies?
CMS Open Payments shows $36 in general payments to Dr. Bell from 1 company from 2024 to 2024. The largest total came from Aadi Bioscience, Inc.
How long has Dr. Diana M. Bell been practicing?
Dr. Bell graduated from medical school in 1993, 33 years ago.
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